Brady refused any offers for a multi-year contract because he wanted to leave. He made sure of that when he forced the Patriots to include language that voided the deal on the last day of the NFL season (making him an unrestricted free agent) and blocked them from using the Franchise Tag. If he had any interest at all in staying, those two things would not have been in his last contract. HE asked for this because HE wanted to leave. The Patriots gave him what he wanted. What's so hard to understand about this?